Make hermes editor titles more friendly

[lior-antonov]

Since the point of this editor is to make the Hermes as user friendly as possible hiding as much of the libraries I think we need to change the titles and labels more in that direction:

• Instead of the input_parameters dropdown it should just be a label that says parameters
• There should be two versions of the name of a parameter of a node. One for the internal hermes name and the other the displayed. The displayed name should be a more friendly string derived from the internal name for example: "ProjectName" should become "Project Name" or "project name", "foo_bar" should become "Foo Bar" or "foo bar". We should choose what is better. The internal name should only be visible when you edit the parameter name.
• As part of Too many icons #963 I think we should already make some changes in the nodes. Editing the name of a field shouldn't require a button, instead just clicking on the field's name should let you edit it(as a textbox that looks like a label, like you did with the node name). The delete button for a field should only appear when you are hovering over it.
• Also part of Too many icons #963 but would probably be a bigger issue later. I think that making the user choose the type of the field is not friendly(visually and practically). It should be implicit by having the user type string as "foobar", null as None/null, numbers as 123.456.